GB2576451A - Motor assembly - Google Patents
Motor assembly Download PDFInfo
- Publication number
- GB2576451A GB2576451A GB1916733.7A GB201916733A GB2576451A GB 2576451 A GB2576451 A GB 2576451A GB 201916733 A GB201916733 A GB 201916733A GB 2576451 A GB2576451 A GB 2576451A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coupler
- target element
- electric power
- steering system
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000008878 coupling Effects 0.000 claims abstract 12
- 238000010168 coupling process Methods 0.000 claims abstract 12
- 238000005859 coupling reaction Methods 0.000 claims abstract 12
- 241000239290 Araneae Species 0.000 claims 4
- 230000001419 dependent effect Effects 0.000 claims 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
- F16D3/64—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic elements arranged between substantially-radial walls of both coupling parts
- F16D3/68—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic elements arranged between substantially-radial walls of both coupling parts the elements being made of rubber or similar material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
- H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
- H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
Abstract
A motor assembly for coupling with a gearbox comprises a motor including a stator and a rotor having a rotor shaft; a flexible coupling means attached to the rotor shaft for transferring torque from the rotor shaft to the gearbox and a motor position sensing means for sensing a position of the rotor shaft, the motor position sensing means including a target element and detecting means for detecting the position of the target element. The target element is supported by the flexible coupling means leading to a reduction in component count.
Claims (27)
1. A motor assembly for coupling with a gearbox, the motor assembly comprising: a motor including a stator and a rotor having a rotor shaft; a flexible coupling means attached to the rotor shaft for transferring torque from the rotor shaft to the gearbox; a motor position sensing means for sensing a position of the rotor shaft, the motor position sensing means including a target element and detecting means for detecting the position of the target element; wherein the target element is supported by the flexible coupling means.
2. A motor assembly according to claim 1 , wherein the flexible coupling means comprises a first coupler rotationally fixed to the rotor shaft, a second coupler for transferring torque to a shaft of the gearbox, and a connecting element that interengages the first coupler and the second coupler for transferring torque therebetween.
3. A motor assembly according to claim 2, wherein the connecting element comprises a spider element including a plurality of legs and the first coupler and the second coupler each include a plurality of drive teeth, the drive teeth engaging with the legs of the spider element, in use .
4. A motor assembly according to claim 2 or claim 3, wherein the target element is supported by the first coupler.
5. A motor assembly according to claim 4, wherein the target element is adhered to the first coupler .
6. A motor assembly according to any of claims 2 to 5, wherein the first coupler is integrally formed with the rotor shaft.
7. A motor assembly according to any preceding claim, wherein the target element is supported on a side of the flexible coupling means facing the stator and the detecting means is interposed between the target element and the stator.
8. A motor assembly according to any preceding claim, wherein the target element includes an annular portion .
9. A motor assembly according to any preceding claim, wherein the motor assembly includes two target elements adjacent to one another.
10. A motor assembly according to any preceding claim, wherein the target element comprises a target magnet.
11. A motor assembly according to claim 10, wherein the target element is magnetised with a magnetisation pattern such that, as the rotor shaft rotates, the detecting means senses changes in the magnetic field detected from the target element.
12. A motor assembly according to any preceding claim, further comprising keying means for orientating the target element.
13. A motor assembly according to claim 12, wherein the keying means includes at least one detent that engages with at least one corresponding recess.
14. An electric power-assisted steering system for a vehicle, the electric power- assisted steering system comprising a housing, an electric motor fixed relative to the housing, the electric motor including a stator and a rotor having a rotor shaft, a worm shaft operatively connected to the rotor shaft, an output shaft operatively connected to a steering column, and a torque sensor adapted to produce an output signal indicative of the torque in the output shaft, the motor being adapted to apply a torque, dependent upon the output signal from the torque sensor, to the output shaft through a worm gear provided on the worm shaft, which is adapted to mesh with a wheel gear operatively connected to the output shaft, the electric power-assisted steering system further comprising a flexible coupling means attached to the rotor shaft for transmitting rotation of the rotor shaft to the worm shaft, a motor driving circuit for providing drive signals to the electric motor, and a motor position sensing means for sensing a position of the rotor shaft, the motor position sensing means being in communication with the motor driving circuit, the motor position sensing means including a target element and detecting means for detecting the position of the target element, wherein the target element is supported by the flexible coupling means.
15. An electric power-assisted steering system according to claim 14, wherein the flexible coupling means comprises a first coupler rotationally fixed to the rotor shaft, a second coupler for transferring torque to a shaft of the gearbox, and a connecting element that interengages the first coupler and the second coupler for transferring torque therebetween
16. An electric power-assisted steering system according to claim 15, wherein the connecting element comprises a spider element including a plurality of legs and the first coupler and the second coupler each include a plurality of drive teeth, the drive teeth engaging with the legs of the spider element, in use .
17. An electric power-assisted steering system according to claim 15 or claim 16, wherein the target element is supported by the first coupler.
18. An electric power-assisted steering system according to claim 17, wherein the target element is adhered to the first coupler.
19. An electric power-assisted steering system according to any of claims 15 to 18, wherein the first coupler is integrally formed with the rotor shaft.
20. An electric power-assisted steering system according to any of claims 15 to 19, wherein the second coupler is integrally formed with the worm shaft.
21. An electric power-assisted steering system according to any of claims 14 to 20, wherein the target element is supported on a side of the flexible coupling means facing the stator and the detecting means is interposed between the target element and the stator.
22. An electric power-assisted steering system according to any of claims 14 to 21 , wherein the target element includes an annular portion.
23. An electric power-assisted steering system according to any of claims 14 to 22, wherein the motor assembly includes two target elements adjacent to one another.
24. An electric power-assisted steering system according to any of claims 14 to 23, wherein the target element comprises a target magnet.
25. An electric power-assisted steering system according claim 24, wherein the target element is magnetised with a magnetisation pattern such that, as the rotor shaft rotates, the detecting means senses changes in the magnetic field detected from the target magnet.
26. An electric power-assisted steering system according to any of claims 14 to 25, further comprising a keying means for orientating the target element.
27. An electric power-assisted steering system according to claim 26, wherein the keying means includes at least one detent that engages with at least one corresponding recess.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB1710107.2A GB201710107D0 (en) | 2017-06-23 | 2017-06-23 | Motor assembly |
| PCT/GB2018/051754 WO2018234828A1 (en) | 2017-06-23 | 2018-06-22 | ENGINE ASSEMBLY |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB201916733D0 GB201916733D0 (en) | 2020-01-01 |
| GB2576451A true GB2576451A (en) | 2020-02-19 |
| GB2576451B GB2576451B (en) | 2022-08-03 |
Family
ID=59523681
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB1710107.2A Ceased GB201710107D0 (en) | 2017-06-23 | 2017-06-23 | Motor assembly |
| GB1916733.7A Active GB2576451B (en) | 2017-06-23 | 2018-06-22 | Motor assembly |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB1710107.2A Ceased GB201710107D0 (en) | 2017-06-23 | 2017-06-23 | Motor assembly |
Country Status (2)
| Country | Link |
|---|---|
| GB (2) | GB201710107D0 (en) |
| WO (1) | WO2018234828A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002364713A (en) * | 2001-06-05 | 2002-12-18 | Asmo Co Ltd | Motor |
| JP2003278784A (en) * | 2001-04-25 | 2003-10-02 | Asmo Co Ltd | Motor |
| DE102006026462A1 (en) * | 2006-06-01 | 2007-12-06 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Coupling device for two rotating units of drive unit of adjusting device for motor vehicle, has signal generator integrated in coupling device, where signal generator produces signal representing set of rotations for rotating units |
| JP2010112414A (en) * | 2008-11-05 | 2010-05-20 | Shiroki Corp | Drive mechanism of gearbox |
| JP2010148260A (en) * | 2008-12-19 | 2010-07-01 | Nsk Ltd | Electric motor and electric power steering device including the same |
| EP2489892A2 (en) * | 2011-02-15 | 2012-08-22 | Universität Bielefeld | Flexible coupling with integrated measuring device |
-
2017
- 2017-06-23 GB GBGB1710107.2A patent/GB201710107D0/en not_active Ceased
-
2018
- 2018-06-22 WO PCT/GB2018/051754 patent/WO2018234828A1/en not_active Ceased
- 2018-06-22 GB GB1916733.7A patent/GB2576451B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003278784A (en) * | 2001-04-25 | 2003-10-02 | Asmo Co Ltd | Motor |
| JP2002364713A (en) * | 2001-06-05 | 2002-12-18 | Asmo Co Ltd | Motor |
| DE102006026462A1 (en) * | 2006-06-01 | 2007-12-06 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Coupling device for two rotating units of drive unit of adjusting device for motor vehicle, has signal generator integrated in coupling device, where signal generator produces signal representing set of rotations for rotating units |
| JP2010112414A (en) * | 2008-11-05 | 2010-05-20 | Shiroki Corp | Drive mechanism of gearbox |
| JP2010148260A (en) * | 2008-12-19 | 2010-07-01 | Nsk Ltd | Electric motor and electric power steering device including the same |
| EP2489892A2 (en) * | 2011-02-15 | 2012-08-22 | Universität Bielefeld | Flexible coupling with integrated measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2576451B (en) | 2022-08-03 |
| WO2018234828A1 (en) | 2018-12-27 |
| GB201710107D0 (en) | 2017-08-09 |
| GB201916733D0 (en) | 2020-01-01 |
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